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Commit 65a0c149 authored by Trond Myklebust's avatar Trond Myklebust
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NFS: nfs_lookup_revalidate should not trust an inode with i_nlink == 0 



If the inode has no links, then we should force a new lookup.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 1f018458

fs/nfs/dir.c

+8 −3
Original line number Original line Diff line number Diff line
@@ -978,10 +978,11 @@ static int nfs_is_exclusive_create(struct inode *dir, unsigned int flags) 
 * particular file and the "nocto" mount flag is not set.

 * particular file and the "nocto" mount flag is not set.

 *

 *

 */

 */

static inline

static

int nfs_lookup_verify_inode(struct inode *inode, unsigned int flags)

int nfs_lookup_verify_inode(struct inode *inode, unsigned int flags)

{

{

	struct nfs_server *server = NFS_SERVER(inode);

	struct nfs_server *server = NFS_SERVER(inode);

	int ret;





	if (IS_AUTOMOUNT(inode))

	if (IS_AUTOMOUNT(inode))

		return 0;

		return 0;
@@ -992,9 +993,13 @@ int nfs_lookup_verify_inode(struct inode *inode, unsigned int flags) 
	if ((flags & LOOKUP_OPEN) && !(server->flags & NFS_MOUNT_NOCTO) &&

	if ((flags & LOOKUP_OPEN) && !(server->flags & NFS_MOUNT_NOCTO) &&

	    (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))

	    (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))

		goto out_force;

		goto out_force;

	return 0;

out:

	return (inode->i_nlink == 0) ? -ENOENT : 0;

out_force:

out_force:

	return __nfs_revalidate_inode(server, inode);

	ret = __nfs_revalidate_inode(server, inode);

	if (ret != 0)

		return ret;

	goto out;

}

}





/*

/*